# US 9,517,552 B2 · Filter remover > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,517,552 B2 - Document ID: US9517552B2 - Status: Granted - Kind: B2 - Application number: 14/371,430 - Filed: 2013-12-25 - Published: 2015-06-25 - Granted: 2016-12-13 - Earliest claimed: 2013-12-25 - Assignees: Komatsu Ltd. - Applicants: Komatsu Ltd. - Inventors: Minato Tomuro; Shinya Furuhata; Shouhei Nagasaka; Kozo Okuda; Osamu Okamoto; Yukinori Maeda - Web page: https://patentgrep.com/patent/US9517552B2 ## CPC - B25B 27/0042: {Tools for removing or replacing filters or for draining oil; Tools for setting or loosening closure means for radiators, batteries, or the like} - B01D 29/21: with corrugated, folded or wound sheets - B25B 27/023: {using screws} - B01D 2201/24: Tools used for the removal of filters - B01D 2201/295: with projections extending in a radial outward direction, e.g. for use as a guide, spacing means - B01D 2201/347: Radial sealings - Y10T 29/53687: by rotation of work part - B25B: TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A filter remover removes a cylindrical filter element housed in a housing through an opening provided in the housing. The filter remover includes: an attachment portion provided with a screw to be screwed onto the opening; an insert portion that includes a base end integrated with the attachment portion and a tip end in a form of a free end, that is elastically deformable in a radial direction orthogonal to an axial direction of the filter element in conjunction with a movement in the axial direction caused when the attachment portion is screwed, and that is inserted through the opening into a center hole provided in the filter element as the attachment portion is screwed; and an engaging portion that is provided at the tip end and that is engaged with the filter element after the attachment portion is moved for a predetermined amount when the attachment portion is screwed. ## Claims ### Claim 1 A filter remover for removing a cylindrical filter element housed in a housing through an opening provided in the housing, the filter remover comprising: an attachment portion provided with a screw that is sized to be screwed around the opening of the housing, wherein the screw is a female screw that is provided on an inner circumferential portion of the attachment portion, and wherein the attachment portion is configured to move in an axial direction of the filter element when the attachment portion is screwed around the opening by rotating the attachment portion; an insert portion that comprises a base end integrated immovably with the attachment portion and a tip end in a form of a free end, wherein the tip end comprises a plurality of arms, wherein the insert portion is elastically deformable in a radial direction orthogonal to the axial direction of the filter element in conjunction with the movement of the attachment portion in the axial direction, and wherein the insert portion is insertable through the opening into a center hole provided in the filter element as the attachment portion is screwed; an engaging portion that is provided at the tip end of the insert portion and that is adapted to engage with the filter element after the attachment portion is moved for a predetermined amount when the attachment portion is screwed; and an adjusting member that is detachably attachable to the insert portion by being inserted between the plurality of arms to adjust the elastic deformability of the insert portion. ### Claim 2 (depends on 1) The filter remover according to claim 1, wherein: the insert portion has a length larger than a length of the filter element in the axial direction; and at a position of the attachment portion just before being completely screwed, a distance between an engaging surface of the engaging portion and an engaged portion that is provided near one of end surfaces of the filter element remote at a depth side from the opening is equal to or less than a movable length in the axial direction of the attachment portion when the attachment portion is screwed. ### Claim 3 (depends on 1) The filter remover according to claim 1, wherein the attachment portion comprises a receiving portion that receives fluid to be filtrated by the filter element. ### Claim 4 (depends on 1) The filter remover according to claim 1, wherein the engaging portion is engaged with an engaged portion provided near one of end surfaces of the filter element remote from the opening. ### Claim 5 (depends on 1) The filter remover according to claim 1, wherein the adjusting member has a plurality of slits that are provided in an extending direction of the plurality of arms so that the plurality of arms respectively enter the plurality of slits of the adjusting member. ### Claim 6 A filter remover for removing a cylindrical filter element housed in a housing through an opening provided in the housing, the filter remover comprising: an attachment portion that comprises a receiving portion for receiving fluid to be filtrated by the filter element; a screw that is sized to be screwed around the opening of the housing, wherein the screw is a female screw that is provided on an inner circumferential portion of the attachment portion, and wherein the attachment portion is configured to move in an axial direction of the filter element when the screw is screwed around the opening by rotating the attachment portion; an insert portion having a plurality of arms that comprises a base end integrated immovably with the attachment portion and a tip end in a form of a free end, the insert portion being elastically deformable in a radial direction orthogonal to the axial direction of the filter element in conjunction with the movement in the axial direction, and being insertable through the opening into a center hole provided in the filter element as the attachment portion is screwed; an engaging portion that is provided at the tip end of the insert portion and that is adapted to engage with the filter element after the attachment portion is moved for a predetermined amount when the attachment portion is screwed; and an adjusting member that is detachably attachable to the insert portion by being inserted between the plurality of arms to adjust the elastic deformability of the insert portion, wherein: the insert portion has a length larger than a length of the filter element in the axial direction; and at a position of the attachment portion just before being completely screwed, a distance between an engaging surface of the engaging portion and an engaged portion that is provided near one of end surfaces of the filter element remote at a depth side from the opening is equal to or less than a movable length in the axial direction of the attachment portion when the attachment portion is screwed. ### Claim 7 (depends on 6) The filter remover according to claim 6, wherein the adjusting member has a plurality of slits that are provided in an extending direction of the plurality of arms so that the plurality of arms respectively enter the plurality of slits of the adjusting member.